New next/kernel/discovery.erl with the local-side webfinger
primitives per design §13.7:
parse_acct/1(Bin) -> {ok, User, Host} | {error, _}
Accepts <<acct:user@host>> (with prefix) or <<user@host>>
(bare). Host preserves an optional :port suffix. Rejects
empty user/host and missing @.
parse_resource/1 alias for the webfinger ?resource= shape
actor_url_for/2(User, Host)
Synthesises <<http://<host>/actors/<user>>>. TLS / https
is v3, gated on a TLS substrate Blocker.
webfinger_body/3(User, Host, ActorUrl)
Builds the RFC 7033 JSON body:
{"subject":"acct:<user>@<host>",
"links":[{"rel":"self",
"type":"application/activity+json",
"href":"<actor_url>"}]}
Hand-rolled byte concatenation — no JSON BIF on this port.
Substrate gotcha re-confirmed: <<"acct:">> string literals
truncate to one byte on this port. "acct:" is spelled as
<<97,99,99,116,58>> in the implementation.
12/12 in next/tests/discovery.sh covering:
- parse_acct prefixed + bare forms
- host with :port preserved
- reject empty user / missing @ / empty host
- parse_resource alias
- actor_url_for synthesis + port preservation
- webfinger_body prefix shape + byte_size sanity
Step 10b (http_server route GET /.well-known/webfinger) and
Step 10c (peer-actor fetch via Step 5's lookup_or_fetch slot)
layer on top. 10c gates on Blockers #2 (native http-request
primitive missing).
giles
ff024d1b5d